Installing a washer into your home or using a hose in the backyard will require a hose bib. A hose bib is a piece of equipment that attaches to the incoming water lines. It includes a spigot, which allows you to turn the water flow on or off as needed.
The hose bib also has a threaded spout, to which a hose is attached. Because of its design, the hose bib helps to prevent backflows. Backflow occurs when water moves in the wrong direction within a water line and can cause dangerous contaminants to enter your drinking water.
However, hose bibs are not 100% effective at stopping backflows. Frozen water pressure, decreased water pressure, or damage to the hose bib could result in an increased chance of water back flowing from the hose into the incoming water lines.
For this reason, it is a wise idea to also install backflow preventers within your plumbing system. These are specifically designed to reduce the chance of backflows that might occur when a hose bib malfunctions.
Additionally, Preventing backflows also requires regular backflow inspections by an experienced plumber.